<template>
  <div class="back">
    <div class="left-title">
      <div>
        广宁县公安局侦查中心
      </div>
    </div>

    <div class="header-title">
      <div>
        本地数据查询系统
      </div>
    </div>

    <div class="login">
      <el-form ref="loginRef" :model="loginForm" :rules="loginRules" class="login-form">
        <h3 class="title">{{ title }}</h3>
        <el-form-item prop="username">
          <el-input
              v-model="loginForm.username"
              type="text"
              size="large"

              auto-complete="off"
              placeholder="账号"

          >
            <template #prefix>
              <svg-icon icon-class="user" class="el-input__icon input-icon"/>
            </template>
          </el-input>
        </el-form-item>
        <el-form-item prop="password">
          <el-input
              v-model="loginForm.password"
              type="password"
              size="large"
              auto-complete="off"

              placeholder="密码"
              @keyup.enter="handleLogin"
          >
            <template #prefix>
              <svg-icon icon-class="password" class="el-input__icon input-icon"/>
            </template>
          </el-input>
        </el-form-item>
        <!--      <el-form-item prop="code" v-if="captchaEnabled">-->
        <!--        <el-input-->
        <!--          v-model="loginForm.code"-->
        <!--          size="large"-->
        <!--          auto-complete="off"-->
        <!--          placeholder="验证码"-->
        <!--          style="width: 63%"-->
        <!--          @keyup.enter="handleLogin"-->
        <!--        >-->
        <!--          <template #prefix><svg-icon icon-class="validCode" class="el-input__icon input-icon" /></template>-->
        <!--        </el-input>-->
        <!--        <div class="login-code">-->
        <!--          <img :src="codeUrl" @click="getCode" class="login-code-img"/>-->
        <!--        </div>-->
        <!--      </el-form-item>-->
        <!--      <el-checkbox v-model="loginForm.rememberMe" style="margin:0px 0px 25px 0px;">记住密码</el-checkbox>-->
        <el-form-item style="width:100%;">
          <el-button
              :loading="loading"
              size="large"
              type="primary"
              style="width:100%;"
              @click.prevent="handleLogin"
          >
            <span v-if="!loading">登 录</span>
            <span v-else>登 录 中...</span>
          </el-button>
          <div style="float: right;" v-if="register">
            <router-link class="link-type" :to="'/register'">立即注册</router-link>
          </div>
        </el-form-item>
      </el-form>
    </div>

    <!--  底部  -->
    <div class="el-login-footer">
      <span>开发者：伍思潮(234430)</span>
      <span class="footer-two">指导部门：县局网警大队</span>
    </div>

  </div>
</template>

<script setup>
import {
  getRecoverStatus
} from "@/api/person/backup";
import {getCodeImg} from "@/api/login";
import Cookies from "js-cookie";
import {encrypt, decrypt} from "@/utils/jsencrypt";
import useUserStore from '@/store/modules/user'
import {ElMessage} from "element-plus";
import {Position} from "@element-plus/icons-vue";

const userStore = useUserStore()
const route = useRoute();
const router = useRouter();
const {proxy} = getCurrentInstance();

const loginForm = ref({
  username: "",
  password: "",
  rememberMe: false,
  code: "",
  uuid: ""
});

const loginRules = {
  username: [{required: true, trigger: "blur", message: "请输入您的账号"}],
  password: [{required: true, trigger: "blur", message: "请输入您的密码"}],
  // code: [{ required: true, trigger: "change", message: "请输入验证码" }]
};
// 恢复数据库中 false 备份完成，true 备份中
const backStatus = ref(true);
const title = ref("")
const codeUrl = ref("");
const loading = ref(false);
// 验证码开关
const captchaEnabled = ref(false);
// 注册开关
const register = ref(false);
const redirect = ref(undefined);
// 轮训状态
let timer = null
const interval = 5000 // 5秒轮询一次

const fetchBackStatus = async () => {
  try {
    const response = await getRecoverStatus();

    backStatus.value = response.data;
    // false 备份完成，true 备份中
    if (backStatus.value) {
      title.value = "系统备份中"
    }else {
      title.value = ""
    }
    console.log("开始轮训！,返回值:{}", response)


  } catch (error) {
    console.error('请求失败:', error)
  }
}

// 开始轮询
const startPolling = () => {
  fetchBackStatus() // 立即执行一次
  timer = setInterval(fetchBackStatus, interval)
}

// 停止轮询
const stopPolling = () => {
  if (timer) {
    clearInterval(timer)
    timer = null
  }
}

// 组件挂载时开始轮询
onMounted(() => {
  startPolling()
})

// 组件卸载时停止轮询
onUnmounted(() => {
  stopPolling()
})

watch(route, (newRoute) => {
  redirect.value = newRoute.query && newRoute.query.redirect;
}, {immediate: true});

function handleLogin() {
  // false 备份完成，true 备份中
  if (backStatus.value) {
    ElMessage.error("系统备份中，不可使用！")

    return;
  }
  proxy.$refs.loginRef.validate(valid => {
    if (valid) {
      loading.value = true;
      // 勾选了需要记住密码设置在 cookie 中设置记住用户名和密码
      if (loginForm.value.rememberMe) {
        Cookies.set("username", loginForm.value.username, {expires: 30});
        Cookies.set("password", encrypt(loginForm.value.password), {expires: 30});
        Cookies.set("rememberMe", loginForm.value.rememberMe, {expires: 30});
      } else {
        // 否则移除
        Cookies.remove("username");
        Cookies.remove("password");
        Cookies.remove("rememberMe");
      }
      // 调用action的登录方法
      userStore.login(loginForm.value).then(() => {
        const query = route.query;
        const otherQueryParams = Object.keys(query).reduce((acc, cur) => {
          if (cur !== "redirect") {
            acc[cur] = query[cur];
          }
          return acc;
        }, {});
        router.push({path: redirect.value || "/", query: otherQueryParams});
      }).catch(() => {
        loading.value = false;
        // 重新获取验证码
        if (captchaEnabled.value) {
          getCode();
        }
      });
    }
  });
}

function getCode() {
  getCodeImg().then(res => {
    captchaEnabled.value = res.captchaEnabled === undefined ? true : res.captchaEnabled;
    if (captchaEnabled.value) {
      codeUrl.value = "data:image/gif;base64," + res.img;
      loginForm.value.uuid = res.uuid;
    }
  });
}

function getCookie() {
  const username = Cookies.get("username");
  const password = Cookies.get("password");
  const rememberMe = Cookies.get("rememberMe");
  loginForm.value = {
    username: username === undefined ? loginForm.value.username : username,
    password: password === undefined ? loginForm.value.password : decrypt(password),
    rememberMe: rememberMe === undefined ? false : Boolean(rememberMe)
  };
}

getCode();
getCookie();


</script>

<style lang='scss' scoped>


.back {
  display: flex;
  flex-direction: column; /* 垂直排列 */
  align-items: center; /* 水平居中 */
  height: 100%;

  /* 保持图片比例的同时填充整个区域 */
  object-fit: cover;
  background-image: url("../assets/images/background.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;

  .left-title{
    left: 30px;
    position: fixed;
    div {
      font-size: 50px;
    }
    height: 5%;
    color: white;
    font-family: Arial;
  }

  .header-title {
    div {
      font-size: 60px;
    }
    margin-top: 10%;
    height: 10%;

    text-align: center;
    color: white;
    font-family: Arial;
  }

  .login {
    margin-top: 20px;
    text-align: center;

    .title {
      margin: 0px auto 30px auto;
      text-align: center;
      color: #707070;
    }


    .login-form {
      border-radius: 6px;
      background: #ffffff;
      width: 500px;
      padding: 25px 25px 5px 25px;

      .el-input {
        height: 50px;

        input {
          height: 50px;
        }
        margin-bottom: 15px;
      }

      .input-icon {
        height: 39px;
        width: 14px;
        margin-left: 0px;
      }


      .login-tip {
        margin-top: 30%;
        font-size: 13px;
        text-align: center;
        color: #bfbfbf;
      }

      .login-code {
        width: 33%;
        height: 40px;
        float: right;

        img {
          cursor: pointer;
          vertical-align: middle;
        }
      }
    }
  }

  .el-login-footer {
    span {
      font-size: 30px;
    }

    height: 70px;
    line-height: 70px;
    margin-top: 80px;
    width: 100%;
    text-align: center;
    color: #fff;
    font-family: Arial;
    font-size: 12px;
    letter-spacing: 1px;

    .footer-two {
      margin-left: 5%;
    }
  }

  .login-code-img {
    height: 40px;
    padding-left: 12px;
  }

}


</style>
